{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4b5350e92a97412dfc50394cb4e8e852d514c948a39ebb27fd0709d07d207d47",
    "signature": "0x9cbe59d6c42c0a62906bb04ade1e48e145a17e4273131b92f34eef9280243f442947a32d25c85ef68ade60919fdd277ce76ee10ad79f26fb29d1c5d46b5d7d751c",
    "signer": "0x128141391D60f85f3b6fe6A24f136045F8b119C3",
    "userId": "414725718"
  }
}